People of Europe are no stranger to ghost stories but some terrifying tales have stood the test of time. Visit the Akershus Fortress in Norway where a dog ghost guards the gates of the former prison. Travel to the Tower of London in England where headless ghosts hang out. Go to the Ruthin Castle Hotel in Wales where the ghost of the Grey Lady is said to terrify visitors. Young readers will be fascinated by each story that comes with its own set of eerie events.